METHOD OF USING CONSTRUCTION WASTES AS COMPONENT OF SLAG-FORMING MIXTURES Russian patent published in 2019 - IPC B09B3/00 C04B18/16 C21C5/54 

FIELD: construction.

SUBSTANCE: invention relates to the processing of solid construction waste and re-engaging them in production and can be used in the production of slag-forming mixtures. Method includes washing the spent cement, crushing, separation into fractions, magnetic separation, re-washing, treatment with 10 % hydrochloric acid, using the resulting substrate in the composition of the slag-forming mixture. Conduct chemical analysis of the slag-forming mixture to determine the resulting mass percentage, equal to the ratio of the mass of calcium in all components of the slag-forming mixture except fluorspar and calcite to the total mass of calcium in the slag-forming mixture, the resulting substrate is introduced into the slag-forming mixture in proportion determined by the resulting percentage of mass.

EFFECT: invention allows to reduce the cost of slag-forming mixtures without loss of quality due to the use of recycled materials from construction waste.

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